How do I set up private channels in Laravel Reverb

To set up private channels in Laravel Reverb:

1. Install Laravel Reverb using the `php artisan install:broadcasting` command, which will set up the necessary configuration files and environment variables.[2][4]

2. In the `channels.php` file, define a private channel using the `Broadcast::channel()` method. For example:

php
Broadcast::channel('private-channel.{userId}', function ($user, $userId) {
    return (int) $user->id === (int) $userId;
});

This creates a private channel named `private-channel.{userId}` where the user can only access the channel if their user ID matches the channel's userId parameter.[3]

3. In your event that you want to broadcast to the private channel, use the `PrivateChannel` class in the `broadcastOn()` method:

php
public function broadcastOn(): array
{
    return [
        new PrivateChannel('private-channel.' . $this->userId),
    ];
}

4. On the frontend, use the `private()` method on the `Echo` instance to subscribe to the private channel, passing the channel name:

javascript
window.Echo.private(`private-channel.${userId}`)
    .listen('EventName', (e) => {
        console.log(e);
    });

Make sure to include the proper authorization logic in the `authorizer` option of the `Echo` configuration to authenticate the user's access to the private channel.[3][5]

By following these steps, you can set up private channels in your Laravel Reverb application to enable secure, real-time communication between the server and authorized clients.